package cn.com.yitong.util;

/**
 * 
 * @author iven
 * 
 */
public class RandomUtil {

	private static int[] primes = { 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37,
			41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107,
			109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179,
			181, 191, 193, 197, 199 };

	/**
	 * 获取步长
	 * 
	 * @return
	 */
	public static int getPrimes() {
		return primes[(int) (Math.random() * (primes.length))];
	}

	/**
	 * 获取基准数
	 * 
	 * @return
	 */
	public static int getBaseNum() {
		return (int) Math.round(Math.random() * 8999 + 1000);
	}
}
